Review Problem #1. A 200 g ball is dropped from rest from a height of 2.0 m, and rebounds to a height of 1.5 m. The figure shows the impluse received from the floor. What is F max ?. Review Problem #1. - PowerPoint PPT Presentation
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
A 200 g ball is dropped from rest from a height of 2.0 m, and rebounds to a height of 1.5 m. The figure shows the impluse received from the floor. What is Fmax?
A 200 g all is dropped from rest from a height of 2.0 m, and rebounds to a height of 1.5 m. The figure shows the impluse received from the floor. What is Fmax?
Fmax = 9.3 x 102 N (ignoring the impulse due to gravity)
The coefficient of static friction is 0.60 between the two blocks in the figure. The coefficient of kinetic friction between the lower block and the floor is 0.20. Force F causes both blocks to slide 5 meters, starting from rest. Determine the minimum amount of time in which the motion can be completed without the upper block slipping.
A 60-gram ball is tied to the end of a 50-cm long string and swung in a vertical circle. The center of the circle, as shown in the figure, is 150 cm above the ground. The ball is swung at the minimum speed necessary to make it over the top without the string going slack.
If the string is cut at the instant the ball is at the top of the loop, how far to the right does the ball hit the ground?
Santa parked his sleigh 5.0 m from the edge of a roof sloped at a 200 angle from horizontal. The reindeer went off on a smoke break. While they were gone, the parking brake failed. Santa’s sleigh slid down the roof and landed on the ground 6.0 m away from the wall of the house. The coefficients of friction between the sleigh and the snowy roof are: us = 0.1 and uk = 0.08.
a. what speed was the sled going when it fell off the roof?
Santa parked his sleigh 5.0 m from the edge of a roof sloped at a 200 angle from horizontal. The reindeer went off on a smoke break. While they were gone, the parking brake failed. Santa’s sleigh slid down the roof and landed on the ground 6.0 m away from the wall of the house. The coefficients of friction between the sleigh and the snowy roof are: us = 0.1 and uk = 0.08.
a. what speed was the sled going when it fell off the roof? 5.11 m/s
• A rigid, 100 N board is placed across 2 bathroom scales separated by a distance of 2.00m. A person of that height lies on the board. The scale under his head reads 475 N and the scale under his feet reads 365 N. Find: a. his weight.
• b. the position of the center of mass relative to his head.
• A rigid, 100-N board is placed across 2 bathroom scales separated by a distance of 2.00 m. A person of that height lies on the board. The scale under his head reads 475 N and the scale under his feet reads 365 N. Find:
• a. his weight 740 N
• b. his position of center of mass relative to his head 0.85 m
A student holds a meter stick horizontally. The number, mass and locations of the hanging objects vary. Rank the situations on the basis of how hard it would be for the student to keep the meter stick from rotating. Show ties. Explain your reasoning:
A student holds a meter stick horizontally. The number, mass and locations of the hanging objects vary. Rank the situations on the basis of how hard it would be for the student to keep the meter stick from rotating. Show ties. Explain your reasoning: