Forces, Free Body Diagrams, and the Laws of Motion
90 videos • 69,461 views • by WNY Tutor
1
When the three blocks are released from rest, they accelerate with a magnitude of 0.500 m/s2. Block
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2
A 1000 kg boat is traveling at 90 km/h when its engine is shut off. The magnitude of the frictional
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3
After falling from rest from a height of 30 m, a 0.50-kg ball rebounds upward, reaching a height of
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4
Two forces are applied to a car in an effort to move it, as shown in the Figure. (a) What is the res
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5
Two blocks of masses m and 2m are held in equilibrium on a frictionless incline as in the Figure. In
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6
A 1000 N crate is being pushed across a level floor at a constant speed by a force F of 300 N at an
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7
Three objects are connected by light strings as shown in the figure. The string connecting the 4.00-
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8
A block of mass 200 g is sent up a 25ο ramp with an initial speed of 6.50 m/s. The coefficient of fr
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9
A woman at an airport is towing her 20.0-kg suitcase at constant speed by pulling on a strap at an a
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10
A 150-N bird feeder is supported by three cables as shown in the figure. Find the tension in each ca
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11
Two blocks are in contact on a frictionless table. A horizontal force is applied to the larger bloc
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12
A sled weighing 60.0 N is pulled horizontally across snow so that the coefficient of kinetic frictio
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13
Blocks A and B have weights of 44 N and 22 N, respectively. (a) Determine the minimum weight of blo
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14
A block of mass m = 5.8 kg is pulled up a θ = 25° incline as in Figure P4.30 with a force of magnitu
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15
The leg and cast in Figure P4.20 weigh 220 N (w1). Determine the weight w2 and the angle alpha neede
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16
Two objects with masses of 3.00 kg and 5.00 kg are connected by a light string that passes over a fr
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17
A loaded penguin sled weighing 80 N rests on a plane inclined at angle 20° to the horizontal. Betwee
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18
A car is traveling at 50.0 km/h on a flat highway. (a) If the coefficient of friction between road a
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19
Three connected blocks are pulled to the right on a horizontal frictionless table by a force of magn
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20
A box of Cheerios and a box of Wheaties are accelerated across a horizontal surface by a horizontal
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21
Three ballot boxes are connected by cords, one of which wraps over a pulley having negligible fricti
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22
An elevator cab is pulled upward by a cable. The cab and its single occupant have a combined mass of
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23
The two blocks (m = 16 kg and M = 88 kg) in the figure are not attached to each other. The coefficie
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24
A 2.0 kg block is placed on top of a 3.0 kg block, which lies on a frictionless surface. The coeffic
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25
An initially stationary box of sand is to be pulled across a floor by means of a cable in which the
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26
A block of mass mt = 4.0 kg is put on top of a block of mass mb = 5.0 kg. To cause the top block to
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27
A water droplet 4.0 mm in diameter is falling with a speed
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28
A bead of mass 2.5 X 10^-4 kg is suspended from a cord
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29
A setup similar to the one shown in figure
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30
Tarzan who weighs 820 n swings from a cliff at the end of a 20.0 m vine
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31
A package of mass m hangs from a short cord
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32
Two blocks each of mass m are fastened to the top of an elevator
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33
The figure shows a box of mass m2 on a frictionless plane inclined at angle θ
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34
Two packing crates of masses 10.0kg and 5.00kg
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35
Find the acceleration of the system and the tension in the string.
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36
Three separate forces act on an object. The gravitational force, Fg, acts downward with a magnitude
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37
John is pulling a sled to haul wood up a snowy hill to his cabin
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38
A block of mass 5.00 kg is placed on an incline
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39
A block of mass m = 15.0 kg is released from rest
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40
A cat burglar hangs from a cable and pulls on each section of the cable by a force
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41
In the figure below block 1 of mass m1
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42
Two blocks are connected by a light cord over a frictionless pulley
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43
Assume the three blocks portrayed in the figure below move on a frictionless surface
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44
A car can decelerate at 3.80 without skidding
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45
A block of mass m = 2.00 kg is released from rest at h
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46
The distance between two telephone poles
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47
Using a rope that will snap if the tension in it exceeds
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48
The system in the figure is in equilibrium with the string
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49
In the figure below block 1 of mass m1
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50
A toy chest and its contents have a combined weight of 180 n
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51
While two forces act on it a particle is to move at the constant velocity
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52
Three astronauts propelled by jet backpacks
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53
The figure shows an arrangement in which four disks are suspended by cords
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54
The tension at which a fishing line snaps
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55
In the figure a crate of mass m
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56
A 40 kg girl and an 8.4 kg sled
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57
A lamp hangs vertically from a cord in a descending elevator
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58
A block of mass m1=3.70kg on a frictionless plane inclined at angle
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59
In the figure two blocks are connected over a pulley
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60
The terminal speed of a skydiver is 160 km/h
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61
Calculate the ratio of the drag force on a jet flying
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62
A roller coaster has a mass of 1200 kg when fully loaded
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63
An old streetcar rounds a flat corner
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64
A 5.0 g bullet leaves the muzzle of a rifle
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65
A donkey is harnessed to a sled having a mass of
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66
Three objects are connected on a table as shown in figure
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67
A 3 kg block starts from rest at the top of a 30 degree incline and slides
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68
A van accelerates down a hill
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69
A 2.00-kg aluminum block and a 6.00-kg copper block are connected
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70
What is the minimum force of friction required to hold the system in equilibrium
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71
A 72 kg man stands on a spring scale
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72
The chewing muscle the masseter is one of the strongest
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73
The figure shows two blocks connected by a cord
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74
The figure shows four penguins that are being playfully pulled along
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75
An 85 kg man lowers himself to the ground
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76
In earlier days horses pulled barges
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77
A 276 kg glider is being pulled
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78
There are two forces on the 2.00 kg box
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79
A sun yacht is a spacecraft with a large sail
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80
A 40 kg skier skis directly down
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81
elevator cabs a and b are connected by a short cable
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82
The figure shows a man sitting in a bosun's chair that dangles
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83
a sphere of mass 3.0x10^-4 kg is suspended from a cord
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84
in about 1915 henry
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85
body a in the figure weighs
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86
an 85.0 kg passenger is made to move along
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87
A puck of mass m 1.50 kg slides
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88
The coefficient of static friction between the 3.00kg crate and the 35.0 incline
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89
In the figure a slab of mass
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90
The rocket sled shown in figure 4.32
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