a ball is attached to a string and swung in a vertical circle at a constant speed. Draw a free body diagram

what happens to the number on the force scale as you start to pull on the toboggan but it remains stationary

Due to conservation of energy, a grandfather clock is able to keep time since the cycle of the pendulum inside remains constant. if the maximum height of a pendulum in a clock is 15.0cm higher than at the equilibrium position, what is the maximum speed of the pendulum?

Calculate the displacement (magnitude and direction) of the ball when it is moved from the initial to the final position.initial position (x, y)i = (–10.0, 10.0) mfinal position (x, y)f = (15.0, –10.0) m?

You are asked to design a rollercoaster. It will have ten attached cars, each of which will have a mass of 500 kg and carry six people with average mass of 70.0 kg. You want to design a vertical circular loop with a radius of 55.0 m. The centre of the circle would have a height of 71.0 m above the ground. Assume the track is frictionless. assume the rollercoaster is designed to operate at the minimum speed at the top of the loop.Calculate the speed of the cars when they are 40? below the horizontal.

A vehicle collision produced -1250N net force. What is the acceleration of a 55.0 kg passenger in the car?

A car breaks on an icy road. At a point, the car's brakes apply a force before the car skids. 

Would this be calculating the coefficient of static or kinetic friction?

A 10kg sled slides down a frictionless icy hill at an angle of 25 degrees. Calculate the parallel component of the sled's weight. Calculate the acceleration of the sled.

Would b) require the force of gravity, or all forces of gravity (parallel, perpendicular, regular, etc)?

Can a coefficient of friction be a whole number? Or does it have to be a decimal?

A toboggan is resting in the snow.

What two (equal in magnitude and opposite in direction) forces is the scale measuring when you start to pull on the toboggan but it remains stationary? Be specific.