Angular Dynamics Help: Solving for Force to Hold a 1000 N Wheelbarrow

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To determine the force a man must exert to hold a 1000 N wheelbarrow, the lever principle is applied, using the wheel as the fulcrum. The load arm is 0.4 m, and the effort arm is 1 m. By balancing the moments around the fulcrum, the equation 1000 N * 0.4 m = Force * 1 m is used. This results in a required force of 400 N to hold the wheelbarrow. Understanding these dynamics is crucial for effectively managing the load.
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I'm stuck on this question:

What force must a man exert to hold up a wheelbarrow which weighs , with contents, 1000 N? Consider distances to the wheel horizontally from the handles and center of gravity to be 1 m and 0.4 m respectively.
 
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Take the wheel as the fulcrum and 1000N is the load and using 0.4 m as load arm and 1 m as effort arm.
 
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