What type of forces are helping John lift the weight?

Muscular, gravitational

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Gravitational, magnetic

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Frictional, gravitational

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Muscular, frictional

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Solution

The correct option is D Muscular, frictional

Muscular force enables John to lift the weight.

Frictional force helps him to hold the weight and avoid its slipping.

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What type of forces are helping John lift the weight?

The correct option is D Muscular, frictional Muscular force enables John to lift the weight. Frictional force helps him to hold the weight and avoid its slipping.

The correct option is D Muscular, frictional

Muscular force enables John to lift the weight.

Frictional force helps him to hold the weight and avoid its slipping.