Forces on an inclined plane

If an object is at rest on an inclined plane, which of the following forces is greatest?

• Normal Force
• Friction
• Weight
• Both Normal Force and Weight are equal, so they both are the greatest.

Assuming both objects are at rest, which object is more massive? M1 or M2?

• M1 is more massive
• M2 is more massive
• both M1 and M2 are the same mass

Assuming both objects are at rest, which side of the string has more tension?

• There is more tension on the side by M1
• There is more tension on the side by M2
• The tension on both sides is the same

If both boxes are at rest in the picture above, what force is equal to the tension in the string?

• The weight of M1
• The weight of M2
• (M1)(g)cos28⁰

If both boxes are at rest in the picture above, what other force is equal to the tension in the string?

• (M1)(g)sin28⁰
• (M1)(g)cos28⁰
• (M2)(g)sin28⁰
• (M2)(g)cos28⁰

Which of the following is equal in magnitude to the Normal Force?

• (M1)(g)sin28⁰
• (M1)(g)cos28⁰
• (M2)(g)sin28⁰
• (M2)(g)cos28⁰

At what rate will a 26kg box acc if it slides down a frictionless slope inclined at 22.6 degrees above the horizontal?

• 3.8
• 5.6
• 7.2
• 3.5

A 72 Kg box sliding down a 15 degree incline acc at a .7m/s^2.  What is the coefficient of friction?

• .189
• .49
• .20
• .76

A boy and sled combo is 65kg is pulled back to the top of the 22.6 degree hill with a uK of .1 constant speed tow rope has a tension of?

• 362
• 117
• 416
• 127