Homework Answers
On holding weight work done by the force applied by boy will zero as there is no displacement.
Option a is correct
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11. A boy holds a 40-N weight at arm's length for 10 s. His arm is...
A boy holds a 40-N weight at arm’s length for 10 s. His arm is 1.5...
A boy holds a 40-N weight at arm’s length for 10 s. His arm is 1.5 m above the ground. What is the work done by the force of the boy on the weight while he is holding it?
QUESTION 2 Find the force generated by the deltoid if: His arm length (d) is: 0.96...
QUESTION 2 Find the force generated by the deltoid if: His arm length (d) is: 0.96 m The COG of the arm is 29% away from the proximal end His arm weighs 7.8 N The weight weighs 125 N The angle of the arm from vertical (@): 90 degrees The deltoid insertion is 0.18 m from proximal end The line of pull for the deltoid is: 20 degrees Round to the nearest whole #. Leave no space between answer and...
refer to picture. A boy pulls his younger sister on a toboggan by a rope that...
refer to picture.
A boy pulls his younger sister on a toboggan by a rope that makes an angle of 37.0° with the horizontal, as shown. The boy maintains a tension of 25.0 N in the rope and walks, on level ground, at a constant speed of 1.10 m/s. The combined mass of the girl and the toboggan is 30.0 kg. Determine a. the normal force exerted on the toboggan by the ground. the coefficient of kinetic friction between the...
(non calculus based physics) Question 1 An Olympic weight lifter lifts an 1800 N set of...
(non calculus based physics) Question 1 An Olympic weight lifter lifts an 1800 N set of weights from the ground to a vertical distance of 2.20 m above his head. Assuming he moves the weights at constant speed, how much work does the weight lifter do? Question 2 A 4.5 kg trunk, initially at rest, takes 2.0 s to slide 2.8 m down a rough 25° slope. Calculate: the work performed by the force of gravity. the amount of mechanical...
A man having weight w=720 N crouches at the end of a diving platform, as shown in the figure.
Ti +Unet = Tf. Or, to summarize in words, the initial translational and rotational kinetic energy of a rigid body plus the work done by all the external forces and couple moments acting on the body as it moves from the initial to the final configuration is equal to the final total kinetic energy of the body.Part BA man having weight w=720 N crouches at the end of a diving
platform, as shown in the figure.(Figure 3)In the crouched position, the...
A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of...
A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.75 m above the bottom of the chute and with an initial speed of 1.25 m/s. The toy animal emerges horizontally from the bottom of the chute and continues sliding along a horizontal surface with coefficient of kinetic friction 0.279. How far from the bottom of the chute does the toy zebra come to rest? Take g = 9.81 m/s2 Mickey, a daredevil mouse...
Please answer only the last question boy on top of a beilding of heigs bailthe same...
Please answer only the last question
boy on top of a beilding of heigs bailthe same sime theows bal 8 horizontally with a spoed D-10mit Which of the two uils ach thegound rst a) Ball B b) Ball A c) Both reach the ground at the same time d) Depends on the value of ue e) Depends on the height of the buildingh A boy throws a ball into a basket with an ial velcity u-10 mis at an angle...
1. A uniform horizontal bar of length L = 2.0 m and weight 144 N is...
1. A uniform horizontal bar of length L = 2.0 m and weight 144 N is pinned to a vertical wall and supported by a thin wire that makes an angle of 0 = 150 with the horizontal. A mass M, with a weight of 302 N, can be moved anywhere along the bar. The wire can withstand a maximum tension of 573 N. What is the maximum possible distance from the wall at which mass M can be placed...
A) Mass is less, weight is the same. B) Mass is the same, weight is less....
A) Mass is less, weight is the same. B) Mass is the same, weight is less. C) Both mass and weight are less. D) Both mass and weight are the same. 25. An astronaut weighs 99 N on the Moon, where the acceleration of gravity is 1.62 m, does she weigh on Earth? A) 16 N B) 61 N C) 99 N D) 600 N E) 440 N 26. A net force of 125 N is applied to a certain...
1. A block with weight W = 30 N is on a flat horizontal surface. You...
1. A block with weight W = 30 N is on a flat horizontal surface. You pull to the right with a force F = 16 N. There is gravity present and the coefficient of friction is static = 0.4 and kinetic - 0.25. You are also pulling straight up with an applied force of 12 N. Now what are: The normal force N-_ the frictional force f- the net force on the block Foot and acceleration a = 2....
QUESTION 2 Find the force generated by the deltoid if: His arm length (d) is: 0.96 m The COG of the arm is 29% away from the proximal end His arm weighs 7.8 N The weight weighs 125 N The angle of the arm from vertical (@): 90 degrees The deltoid insertion is 0.18 m from proximal end The line of pull for the deltoid is: 20 degrees Round to the nearest whole #. Leave no space between answer and...
refer to picture.
A boy pulls his younger sister on a toboggan by a rope that makes an angle of 37.0° with the horizontal, as shown. The boy maintains a tension of 25.0 N in the rope and walks, on level ground, at a constant speed of 1.10 m/s. The combined mass of the girl and the toboggan is 30.0 kg. Determine a. the normal force exerted on the toboggan by the ground. the coefficient of kinetic friction between the...
Please answer only the last question
boy on top of a beilding of heigs bailthe same sime theows bal 8 horizontally with a spoed D-10mit Which of the two uils ach thegound rst a) Ball B b) Ball A c) Both reach the ground at the same time d) Depends on the value of ue e) Depends on the height of the buildingh A boy throws a ball into a basket with an ial velcity u-10 mis at an angle...
1. A uniform horizontal bar of length L = 2.0 m and weight 144 N is pinned to a vertical wall and supported by a thin wire that makes an angle of 0 = 150 with the horizontal. A mass M, with a weight of 302 N, can be moved anywhere along the bar. The wire can withstand a maximum tension of 573 N. What is the maximum possible distance from the wall at which mass M can be placed...
A) Mass is less, weight is the same. B) Mass is the same, weight is less. C) Both mass and weight are less. D) Both mass and weight are the same. 25. An astronaut weighs 99 N on the Moon, where the acceleration of gravity is 1.62 m, does she weigh on Earth? A) 16 N B) 61 N C) 99 N D) 600 N E) 440 N 26. A net force of 125 N is applied to a certain...
1. A block with weight W = 30 N is on a flat horizontal surface. You pull to the right with a force F = 16 N. There is gravity present and the coefficient of friction is static = 0.4 and kinetic - 0.25. You are also pulling straight up with an applied force of 12 N. Now what are: The normal force N-_ the frictional force f- the net force on the block Foot and acceleration a = 2....
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