Problems I. A 0.3kg meterstick is suspended motionlessing by a shark's tooth which is 0.2 meters to the right of the ruler's center of mass, and a toy giraffe which is holding up the left end, 0.5 meters to the left of the center of mass. Fill in the table, and find the force of the giraffe on the meterstick. Meterstick y torque N? 0.5m 0.2m y

Problems I. A 0.3kg meterstick is suspended motionlessing by a shark's tooth which is 0.2 meters to the right of the ruler's center of mass, and a toy giraffe which is holding up the left end, 0.5 meters to the left of the center of mass. Fill in the table, and find the force of the giraffe on the meterstick. Meterstick y torque N? 0.5m 0.2m y

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter12: Static Equilibrium And Elasticity

Section: Chapter Questions

Problem 37P: To get up on the roof, a person (mass 70.0 kg) places 6.00-m aluminum ladder (mass 10.0 kg) against...

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To get up on the roof, a person (mass 70.0 kg) places 6.00-m aluminum ladder (mass 10.0 kg) against the house on a concrete pad with the base of ladder 2.00 m from the house. The ladder rests against a plastic rain gutter, which we can assume to frictionless. The center of ladder is 2.00 m from the bottom. The person is standing 3.00 m from the bottom. Find the normal reaction and friction forces on the ladder at its base.
A 90.0-kg ice hockey player hits a 0.150-kg puck, giving the puck a velocity of 45.0 m/s. If both are initially at rest and if the ice is frictionless, how far does the player recoil in the time it takes the puck to reach the goal 15.0 m away?
Suppose a fireworks shell explodes, breaking into three large pieces for which air resistance is negligible. How does the explosion affect the motion of the center of mass? How would it be affected if the pieces experienced significantly more air resistance than the intact shell?
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Two hockey players approach each other head on, each traveling at the same speed Vi . They collide and get tangled together, falling down and moving off at a speed Vi/5 . What is the ratio of their masses?
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A hiker inspects a tree frog sitting on a small stick in his hand.Suddenly startled, the hiker drops the stick from rest at aheight of 1.85 m above the ground and, at the same instant,the frog leaps vertically upward, pushing the stick down sothat it hits the ground 0.450 s later. Find the height of the frogat the instant the stick hits the ground if the frog and the stickhave masses of 7.25 g and 4.50 g, respectively. (Hint: Find thecenter-of-mass height at t = 0.450 s for the frog–stick systemand then use the definition of center of mass to solve for thefrog’s height.)
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