How much work is done in completing one rep of 50 kg on a bench press ( holding the bar, lowering the weight down, lifting it back up again)? Explain in detail. Thanks!

Q: 6) A crane lowers a girder into place. Consider the work Wg done by gravity and the work WT done by…

A: Work done by a force is given as  W = F.d  F=force, d= displacement Work done is dot product of…

Q: Give an example of a frictional force doing positive work

A: Frictional force: This force is act between two rough surface while movement. The frictional force…

Q: To make a batch of cookies, you mix half a bag of chocolate chips into a bowl of cookie dough,…

A: Here's the information that we need to use: FF is the applied force vv is the speed ΔtΔt is the…

Q: How much mechanical work is required to mov feet to your heart, approximately 1.0m higher? A) 1 J B)…

A: Given:- 13 )  The mass of the blood m = 1.0 kg  [ Given ]  The height h = 1.0 m  [ Given ]  Find:-…

Q: 8. Calculate the power required of a 1400kg car under the following circumstances: (a) the car…

A: a) Let the force F required to speed up the car. This can be calculated using Newton’s second law of…

Q: 1. When you lift a book from the ground to your desk, what kind of work do you do, negative or…

A: The energy stored in the object due to its position above the ground or reference level, the energy…

Q: A force of 85 pounds, exerted at an angle of 60° with the horizontal, is required to slide an object…

A: Given data: Force (F) = 85 lb Angle (θ)= 60° Displacement (d) = 10 feet Required: Work done (W)

Q: 1. Pete lifts a 500 Newton barbell to a height of 1.2 meters. (a) How much force must Pete apply to…

A: Given: Weight of barbell W=500 N Height hoti which barbell is to be lift h=1.2 m To determine (a)…

Q: Ffr = 20 N Fapp 200N %D

A: Given, Fapp=200N Ff=20N The net force is in the forward direction (towards Right)=200-20 Net…

Q: Which do you think requires more work: moving up stairs at a slow speed (ex: walking) or moving up…

A: We know the  formula of work  W= F × S Where F =Force  S= displacement

Q: A woman swimming upstream is not moving with respect to the shore. Is she doing any work? If she…

A: The water is flowing in one direction with respect to the shore. The woman is swimming in the…

Q: "Explain how ""elastic potential energy "" dramatically changed the sport of pole vaulting when…

A: It is because, the flexible fiberglass can bend easily as compared to stiffer wooden poles.

Q: A person pulls a 50-kg crate along a horizontal floor by a constant force Fp=100N, which acts at a…

A: Given data The mass of the crate is given as m = 50 kg. The constant force is given as Fp = 100 N.…