Suppose you are at a bowling alley, where a machine uses a constant force and pushes balls up a ramp one meter in length. The balls are sliding -- not rolling -- along the incline, and they end up half a meter above the base of the ramp. Ignore friction. Approximately how much force does the machine put on a 5 kg bowling ball? 1.0 m H 0.5 m

Suppose you are at a bowling alley, where a machine uses a constant force and pushes balls up a ramp one meter in length. The balls are sliding -- not rolling -- along the incline, and they end up half a meter above the base of the ramp. Ignore friction. Approximately how much force does the machine put on a 5 kg bowling ball? 1.0 m H 0.5 m

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter5: Newton's Laws Of Motion

Section: Chapter Questions

Problem 76PQ: Jamal and Dayo are lifting a large chest, weighing 207 lb, by using the two rope handles attached to...

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Jamal and Dayo are lifting a large chest, weighing 207 lb, by using the two rope handles attached to either side. As they lift and hold it up so that it is motionless, each handle makes a different angle with respect to the vertical side of the chest (Fig. P5.76). If the angle between Jamals handle and the vertical side is 25.0 and the angle between Dayos handle and the vertical side of the chest is 30.0, what are the tensions in each handle? FIGURE P5.76
A parachutist (mass, m = 85 kg including parachute) has an initial velocity, v0 = 52.8 ms-1, immediately after the parachute opens. The drag force provided the parachute varies as a function of velocity, such that Fd = kv2 where k = 13.7 kg/m. Calculate the time it takes in seconds for the velocity to reach half the initial velocity. What is the maximum speed (terminal velocity) in km/h of the parachutist when the parachute is open?
two astronauts who have just landed used a power craned to lower their 300 kg moon buddy to the ground at a constant speed of 2m/s from 10 meters up on the moon where g = 1.62 m/s^2. How long should it take to reach the ground ?
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Estimate the minimum force that Microraptor must exert to fly.A. 0.65 N B. 1.3 NC. 1.0 N D. 10 N
A 0.50-kg ball that is tied to the end ofa 1.5-m light cord is revolved in a horizontalplane, with the cord making a 30°angle with the vertical. (See Fig. P7.75.)(a) Determine the ball’s speed. (b) If,instead, the ball is revolved so that itsspeed is 4.0 m/s, what angle does thecord make with the vertical? (c) If thecord can withstand a maximum tensionof 9.8 N, what is the highest speed atwhich the ball can move?
In the very Dutch sport of Fierljeppen, athletes run up to a long pole and then use it to vault across a canal. At the very top of his arc, a 55 kg vaulter is moving at 2.5 m/s and is 5.1 m from the bottom end of the pole. What vertical force does the pole exert on the vaulter?
A 4.0kg object is moving across a friction-free surface with a constant velocity of 2ms–1. How much the horizontal forces is needed to maintain this state of motion?
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