subject
Physics, 19.01.2020 04:31 fionatetreault8634

Atennis ball is a hollow sphere with a thin wall. it is set rolling without slipping at 4.03 m/s on the horizontal section of a track, as shown. it rolls around the inside of a vertical circular loop 90.0 cm in diameter and finally leaves the track at a point 20.0 cm below the horizontal section. (a) find the speed of the ball at the top of the loop. demonstrate that it will not fall from the track. (b) find its speed as it leaves the track. (c) suppose that static friction between the ball and the track was negligible, so that the ball slide instead of rolling. would its speed then be higher, lower, or the same at the top of the loop

ansver
Answers: 2

Another question on Physics

question
Physics, 22.06.2019 21:20
16. a brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 n on him. the mass of the losing player plus equipment is 90.0 kg, and he is accelerating at 1.20m/s2 size 12{1 "." "20"" m/s" rsup { size 8{2} } } {} backward. (a) what is the force of friction between the losing player’s feet and the grass? (b) what force does the winning player exert on the ground to move forward if his mass plus equipment is 110 kg? (c) draw a sketch of the situation showing the system of interest used to solve each part. for this situation, draw a free-body diagram and write the net force equation.
Answers: 2
question
Physics, 23.06.2019 01:00
The amount of heat required to change liquid water to vapor at its boiling temperature is 2256 kj/kg. the amount of heat required to change liquid mercury to its vapor state at its boiling temperature is 295 kj/kg. one kg of each substance is currently at its boiling point. how will the amount of thermal energy required to change each substance from a liquid to a gas differ?
Answers: 3
question
Physics, 23.06.2019 02:40
An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)
Answers: 1
question
Physics, 23.06.2019 04:40
Asign is hung between two cables as illustrated below. if the sign weighs 350 n, what is the tension (in n) in each cable?
Answers: 1
You know the right answer?
Atennis ball is a hollow sphere with a thin wall. it is set rolling without slipping at 4.03 m/s on...
Questions
question
Computers and Technology, 18.12.2019 07:31
question
History, 18.12.2019 07:31
question
Mathematics, 18.12.2019 07:31
Questions on the website: 13722365