EBK PHYSICS FUNDAMENTALS
2nd Edition
ISBN: 9780100265493
Author: Coletta
Publisher: YUZU
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Chapter 5, Problem 45P
To determine
To evaluate: The minimum mass of a block is to be calculated to replace the 1.0 kg block and2.0kg block moves upward.
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Chapter 5 Solutions
EBK PHYSICS FUNDAMENTALS
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- Block B in Fig. 6-31 weighs 711 N.The coefficient of static friction between block and table is 0.25; angle u is 30; assume that the cord between B and the knot is horizontal. Find the maximum weight of block A for which the system will be stationary.arrow_forwarda block of mass "m" slides down an incline, which makes an angle of 30 degrees with horizontal. if the acceleration of the block is 3.3 m/s^2, then find the coefficient of kinetic frictionarrow_forwardTwo blocks A and B of the same mass 1.06 kg are released from rest on a 30° incline when they are S = 16.4 m apart, as shown. The coefficient of friction under the upper block A is 0.21, and that under the lower block B is 0.4. Compute the elapsed time (in seconds) until the blocks touch each other.arrow_forward
- A high diver of mass 70.0 kg steps off a board 10.0 m above the water and falls vertical to the water, starting from rest. If her downward motion is stopped 2.00 s after her feet first touch the water, what average upward force did the water exert on her?arrow_forwardAn inclined plane 4.8 meters long and 1.2 meters high is used to raise a 500-kg log onto a truck. If a force of 1500 newtons parallel to the inclined plane is needed to push the load up the incline at constant speed, find the force of friction.arrow_forwardAn 8 kg block rests on a horizontal surface whose coefficients of friction are: s = 0.4 and k = 0.2. The maximum force that can be applied to the block so that it does not move is?arrow_forward
- When a force is applied to the more massive block, the net force on the block can be given as,arrow_forwardA car of mass 975 kg coasts on a level road, starting with an initial speed of 15.0 m/s and coming to rest 15.0 s later. Find the frictional force acting on the car.arrow_forwardThe driver of a car applies the brakes, and the car starts to skid. If the coefficient of friction between the car's tires and the ground is 0.7, then what acceleration does the car experience?arrow_forward
- Body A in Fig. 6-33 weighs 102 N, and body B weighs 32 N. The coefficients of friction between A and the incline are µs =0.56 and µk =0.25. Angle θ is 40. Let the positive direction of an x-axis be up the incline. In unit-vector notation, what is the acceleration of A if A is initially (a) at rest, (b) moving up the incline, and (c) moving down the incline.arrow_forwardA person steps horizontally off the roof of a single-story house that is 3.1 m high. When his feet hit theground below, he bends his knees such that his torso decelerates over a distance of 0.65 m before coming to astop. If the mass of his torso is 50 kg, what is the average net force exerted on his torso over this distance?arrow_forwardA child pulls on a wagon handle at an angle of 37 degrees above the horizontal with a force of 45 N. If the wagon accelerates at 8.1m/s^2 horizontally, what is the mass of the wagon? Assume frictional forces are negligible.arrow_forward
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