A man uses a crowbar of length $1.5 m$ to raise a load of $75 k g f$ by putting a sharp edge below the bar at a distance $1 m$ from his hand. Calculate the effort arm.

0.1 m

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1.0 m

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5 m

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0.5 m

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Solution

The correct option is B $1.0 m$
Effort arm is the distance between the effort applied (hand) and the fulcrum which is $1.0 m$ from the hand. Hence, effort arm is $1.0 m$

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A man uses a crowbar of length 1.5m to raise a load of 75 kgf by putting a sharp edge below the bar at a distance of 1m from his hand. The load is at the opposite end of the effort. Calculate (i) load arm (ii) effort arm (iii) mechanical advantage and (iv) the effort needed.

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A man uses a crowbar of length 1.5m to raise a load of 75kgf by putting a sharp edge below the bar at a distance 1m from his hand. Calculate the effort arm.

The correct option is B 1.0mEffort arm is the distance between the effort applied (hand) and the fulcrum which is 1.0m from the hand. Hence, effort arm is 1.0m

A man uses a crowbar of length $1.5 m$ to raise a load of $75 k g f$ by putting a sharp edge below the bar at a distance $1 m$ from his hand. Calculate the effort arm.

The correct option is B $1.0 m$
Effort arm is the distance between the effort applied (hand) and the fulcrum which is $1.0 m$ from the hand. Hence, effort arm is $1.0 m$