LO 5 kg The figure above shows a block rotating in a vertical circle at the end of a string. At P, the string pulls down on the block with a force of 20 N (c) Determine the change in kinetic energy of the block as it moves from point P to point Q.
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- A car is accelerated from velocity v1 to v2 in the time period of t . The mass of the car is m. The inclined angle of the hill is α. The distance travelled along the hill is L. The vertical distance travelled is H. Select the correct equation for the extra power required , ________ A. None of them B. C. D.1. Choose the correct answer from the option list below to answer the following parts. a) A ball is rolling across the floor at a constant velocity. What is the value of the change in its kinetic energy, ΔEk? b) A ball starts rolling down a ramp. What is the value of the change in its kinetic energy, ΔEk? c) A ball slows down as it rolls up a hill. What is the value of the change in its kinetic energy, ΔEk? i) Zero ii) Positive iii) NegativeA 380-N child is in a swing that is attached to a pair of ropes 1.80 m long. Find the gravitational potential energy of the child-Earth system relative to the child's lowest position at the following times. (a) when the ropes are horizontal 684 (b) when the ropes make a 32.0° angle with the vertical J (c) when the child is at the bottom of the circular arc J
- please asapRashford invents a propeller plane that spins from rubber band energy. He exerts a force of 0.100 newtons evenly on one end of the propeller. With a distance of 10.0 cm from the center, as shown in the figure, causing the rubber band wraps around the axis of rotation for 20 cycles. Find the energy stored in the rubber band in joules. FQuestion 1 7 pts This graph shows a ball rolling from A to G. Which letter shows the ball when it has the maximum kinetic energy? O A D O E
- Please include solution. Thank you!I need help with this questionA toy plane with a mass of 0.85 kg is tied to a string and made to travel at a speed of 24 m/s in a horizontal circle with a 18 m radius. The person holding the string pulls the plane in, increasing the tension in the string, increasing the speed of the plane and decreasing the radius of the plane's orbit. ON Newtons (N) Scale records tension What is the net work done (in J) on the plane if the tension in the string increases by a factor of four and the radius decreases to 12 m. J