a block of mass M slides down a frictionless plane inclined at an angle theta wi

Question

a block of mass M slides down a frictionless plane inclined at an angle theta with the horizontal. the gravitational force is directed a. parallel to the plane in the opposite direction as the movement of the block b. parallel to the plane in the same direction as the movement of the block c. perpendicular to the plane d. toward the center of the earth a block of mass M slides down a frictionless plane inclined at an angle theta with the horizontal. the gravitational force is directed a. parallel to the plane in the opposite direction as the movement of the block b. parallel to the plane in the same direction as the movement of the block c. perpendicular to the plane d. toward the center of the earth a. parallel to the plane in the opposite direction as the movement of the block b. parallel to the plane in the same direction as the movement of the block c. perpendicular to the plane d. toward the center of the earth

Explanation / Answer

The net force acting on the mass is F - f = ma 5 N - f = (4kg)(0.5m/s^2) f = 5 N - 2 N = 3 N So option (d) is correct

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