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How does a weight lifter holding barbells above his head utilize his muscles to perform work?
When a weight lifter holds barbells above his head, he uses his muscles to contract and generate force, allowing him to lift and stabilize the weight. This involves the activation of various muscle groups, such as the deltoids, triceps, and core muscles, to perform the work of lifting and holding the barbells overhead.
What two types of force would a weight lifter use to lift barbells above his head?
The weight lifter would typically use muscular force generated by their muscles to lift the barbells, as well as gravitational force to overcome the weight of the barbells as they move upward.
Are the forces acting on the weight lifter and the weights balanced or unbalanced?
The forces acting on the weight lifter and the weights are balanced when the weight lifter is holding the weights stationary. The force exerted by the weight lifter is equal and opposite to the force of gravity acting on the weights.
When A weight lifter in holding a weight of 120 kg on his shoulder for 30 s .calculate amount of work done.?
To calculate the work done, we need to know the distance over which the weight lifter held the weight. If we assume the weight lifter held the weight steady at shoulder height (about 1.5 meters), the work done would be Weight x Height = 120 kg x 1.5 m = 180 Joules.
How does the of a 115kg barbell compare to the weight of the lifter?
The weight of a 115kg barbell is constant. The lifter's weight, however, will vary. If the lifter weighs less than 115kg, the barbell will be heavier relative to their weight. If the lifter weighs more than 115kg, the barbell will be lighter relative to their weight.
How does a weight lifter holding barbells above his head utilize his muscles to perform work?
When a weight lifter holds barbells above his head, he uses his muscles to contract and generate force, allowing him to lift and stabilize the weight. This involves the activation of various muscle groups, such as the deltoids, triceps, and core muscles, to perform the work of lifting and holding the barbells overhead.
What if a weight is holding barbells above his head what does he have to do to perform work?
Step Forward
What two types of force would a weight lifter use to lift barbells above his head?
The weight lifter would typically use muscular force generated by their muscles to lift the barbells, as well as gravitational force to overcome the weight of the barbells as they move upward.
What is the amount of work done by a weight lifter in holding a weight of 100kg on his shoulder for 40 seconds?
While just holding the weight on his shoulder, the weight lifter does no work! For work to be done, the mass must be moved through a distance … No Movement, No Work! (but don't tell that to a weight lifter …)
Are the forces acting on the weight lifter and the weights balanced or unbalanced?
The forces acting on the weight lifter and the weights are balanced when the weight lifter is holding the weights stationary. The force exerted by the weight lifter is equal and opposite to the force of gravity acting on the weights.
When A weight lifter in holding a weight of 120 kg on his shoulder for 30 s .calculate amount of work done.?
To calculate the work done, we need to know the distance over which the weight lifter held the weight. If we assume the weight lifter held the weight steady at shoulder height (about 1.5 meters), the work done would be Weight x Height = 120 kg x 1.5 m = 180 Joules.
How does the of a 115kg barbell compare to the weight of the lifter?
The weight of a 115kg barbell is constant. The lifter's weight, however, will vary. If the lifter weighs less than 115kg, the barbell will be heavier relative to their weight. If the lifter weighs more than 115kg, the barbell will be lighter relative to their weight.
How much work is done by a weight lifter when he holds a weight of 80Kg on his shoulders for two minutes?
The work done would be zero, since the weight lifter is not moving the weight vertically. Work is defined as force applied in the direction of motion. Holding a weight in a static position does not result in any work being done.
How much work is done a weight lifter when he hold a weight of 80 kg on his shoulder for 2 minutes?
The work done by the weight lifter holding a weight of 80 kg on his shoulder for 2 minutes is zero, assuming he remains stationary. Work is calculated as force multiplied by displacement in the direction of the force, and since there is no displacement in this case, no work is done.
How much work is done by a weight lifter when he holds a weight of 80kgs on his shoulder for two minutes?
none. work is done when a force is applied thru a distance. holding something stationary does no work.
How does the force of the lifter compare with the weight of the barbell at different stage of the lifter?
At the beginning of the lift, the lifter's force is greater than the weight of the barbell to overcome inertia and initiate movement. During the middle of the lift, the lifter's force is equal to the weight of the barbell to maintain constant velocity. Towards the end of the lift, the lifter's force is less than the weight of the barbell due to deceleration and control.
How could a world champion weight lifter had a brother who was a doctor if the doctor had no brother?
The Doctor has a sister that is a World Champion weight lifter.
