Saturday

April 19, 2014

April 19, 2014

Total # Posts: 7

**physics**

A crate of oranges weighing 164 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.30 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.6 m/s a) What is the for...

**physics**

A 125.0-N sign is suspended from a horizontal strut of negligible weight. The force exerted on the strut by the wall is horizontal. Draw an FBD to show the forces acting on the strut. (Do this on paper. Your instructor may ask you to turn in this work.) Find the tension T in t...

**physics**

Two boxes with different masses M1 = 1.1 kg and M2 = 3.0 kg are tied together on a frictionless ramp surface which makes an angle θ = 27° with the horizontal (see the figure below). What is the tension in the rope connecting the two boxes? What is the tension in the r...

**physics**

A box sits on a horizontal wooden board. The coefficient of static friction between the box and the board is 0.41. You grab one end of the board and lift it up, keeping the other end of the board on the ground. What is the angle between the board and the horizontal direction w...

**physics**

A 10.0-kg block is at rest on a horizontal floor. If you push horizontally on the 10.0-kg block with a force of 20.0 N, it just starts to move. (a) What is the coefficient of static friction? b) A 12.0-kg block is stacked on top of the 10.0-kg block. What is the magnitude F of...

**physics**

At what altitude above the Earth's surface would your weight be two-thirds of what it is at the Earth's surface? (Assume Re = 6.371 103 km.)

**physics**

A man lifts a 3.1 kg stone vertically with his hand at a constant velocity of 2.1 m/s. What is the magnitude of the total force of the man's hand on the stone?

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