A block is on a frictionless table, on earth. The block accelerates at 2.5 m/s2

Question

A block is on a frictionless table, on earth. The block accelerates at 2.5 m/s2 when a 40 N horizontal force is applied to it. The block and table are set up on the moon. The acceleration due to gravity at the surface of the moon is 1.62 m/s2. A horizontal force of 20 N is applied to the block when it is on the moon. The acceleration imparted to the block is closest to: A block is on a frictionless table, on earth. The block accelerates at 2.5 m/s2 when a 40 N horizontal force is applied to it. The block and table are set up on the moon. The acceleration due to gravity at the surface of the moon is 1.62 m/s2. A horizontal force of 20 N is applied to the block when it is on the moon. The acceleration imparted to the block is closest to: 1.5 m/s2 1.1 m/s2 1.3 m/s2 1.4 m/s2 1.6 m/s2

Explanation / Answer

system on earth:

mass of block = 40/2.5 = 16 kg

system on moon:

acceleration of block = 20/16 = 1.25 m/s^2

therefore it is close to 1.3 m/s^2

Reason: the friction between block and table is zero

so acceleration due to gravity is going to affect the acceleratio or a linear motion parallel to the surface of ground of body if and only if, there is some friction between block and table

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