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Question:
1) A coin is placed on a large disk which rotates uniformly at a rate of 2 rot/s. The coefficient of friction between the coin and the disk is 0.1. To what distance from the center of the disk should the coin be placed so that the coin may not slip?
2) A 1663 -kg car moves on a horizontal curved road. If the radius of the curve is 42 m and the coefficient of friction between the tires and road is 0.1, find the maximum speed the car can have so that it may not skid.
3) A small sphere of mass 2 kg is attached to the end of a cord of length 3m and rotated in a vertical circle about a fixed point O. Determine the tension in the cord at the uppermost point of the trajectory if the speed at this point is 8m/s. Use g=9.8 m/s2.
4) A small sphere of mass 2 kg is attached to the end of a cord of length 2m and rotated in a vertical circle about a fixed point O. Determine the tension in the cord at the lowest point of the trajectory if the speed at this point is 9m/s. Use g=9.8 m/s2.
5) True or False? A small sphere of mass 1 kg is attached to the end of a cord of length 1 m and rotated in a vertical circle about a fixed point O. If the speed at the uppermost point of the trajectory is 1 m/s, the sphere will have a circular trajectory (will move in a circle).
Use g=9.8 m/s2.
Sketch the situation. What is the net force charge on q3? What is the unit vector pointing in the direction of the net force?
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Susan works as a retail manager and Rob is a self-employed electrician but does not maintain a home office - Determine the for the Cowen's 2015 tax year
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The planet Jupiter has a satellite, Europa, which travels in an orbit of radius 6.710×108 m with a period of 3.55 days. Calculate the mass of Jupiter from this information
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Two children are carrying a 2.00-m long uniform level board with a mass 5.00 kg, What is the force applied by the child that is closer to the book to support the board
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Two blocks made of different materials, connected by a thin cord, slide down a plane ramp inclined at an angle 32 degrees to the horizontal. Determine the tension in the cord
A 1,200kg satellite is placed in an orbit 5,000km above the surface of the Earth. a. What is the gravitational acceleration of the Earth at that altitude? b. What is the speed of the satellite? c. How long does it take the satellite to go around the ..
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