1. Differentiate work, energy and forces and answer some misconceptions about it.
Q: The third floor of a house is 10 m above the street level. How much work is required to lift a 500…
A:
Q: Why is work a dot product of force and displacement, and not a cross product
A: Work is scaler quantity which has only magnitude, no direction. Force and displacement are vector…
Q: 8. Use graphing techniques to determine how much work is required to stretch an elastic bungee cord…
A:
Q: 16. Which of the following is/are incorrect about the concept of business? I) If the sign of the…
A: We are given 3 statements about work done. The thermodynamics first law is about law of conservation…
Q: Apply the work equation to determine the amount of work done, in N-m, by a 104 N force applied to…
A: Given data: Force (F) = 104 N Horizontal displacement (d) = 11.05 m Required: Work done (W)
Q: When the force is opposite the displacement of the object where it is acting, the force is doing A.…
A: Solution-: Since force is opposite the displacement of object then angle between force and…
Q: . Jordan is 32kg and walks up stairs. She travels a vertical distance of 2 meters. Determine how…
A:
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: How much work would you do lifting a 4kg book 2m vertically as you place it on a shelf? How much…
A: mass m= 4kg Height h= 2m accleration due to gravity g= 9.8m/s^2
Q: QUESTION 4 The work done by any force can be calculated by using the formula W = F s cos(e) where…
A: The work by any force can be calculated by using the formula is W=Fscosθ Here F is the applied…
Q: 4. I could better understand energy transfer if I ... Answer:
A: The capacity of doing work is called the energy of the body. The amount of work, that a body can do…
Q: 1. If you pushed a 20 kg box across the floor for a distance of 60 m with a force of 15 N how much…
A: #1 Given data: The mass of box is m=20 kg. The distance traveled by the box is d=60 m. The force…
Q: 1. Calculate the work done by a force of 30 N in lifting a load of 2kg to a height of 10m (g =…
A: Required work done by given forces to displace the objects.
Q: A 1400-N crate rests on the floor. a.) How much work is required to move it at constant speed 5.0 m…
A: Given Weight of the crate is Fg=1400 N Displacement of the crate is d=5.0 m Frictional force is…
Q: 2. Are you doing work in these situations? Also a question from your PHYS1111 class.
A: Work done is force that cause a body to move. It is the product of force and displacement.
Q: 2. Force and displacement are the two essential elements of work. Write true if the statement is…
A: False. Reason- work done depends upon force displacement and the angle between force and…
Q: 12. When you go upstairs, you a. do more work when you walk than when you run b. do less work when…
A: 12.) Work depends on force and displacement only as force acting during running or walking is weight…
Q: Two people use ropes to pull identical sofas up to their neighboring 5th floor apartments. One pulls…
A: t1=100 sect2=20 secLet the mass of the blocks is m and height of the floor is h. The change in…
Q: Students are designing an investigation to explain the relationship between potential and kinetic…
A: we know that the potential energy is given by U=mgh here m=mass of the marble h=height of the books…
Q: A 5-kg block slides () along a rough () horizontal surface. The coefficient of kinetic friction for…
A: Given : m = 5 kg μk = 0.40 v = 3.5 m/s
Q: 1. Describe the energy transformations that occur when you climb to the top of a stairway.
A: To discuss the energy transformations that occur when climb to the top of a stairway.
Q: 11. You push down on a 4.0 N box against the floor for 2 minutes. How much work was done? How much…
A: The force applied, F=4 N The time for which the force is applied, t=2 min
Q: Describe a situation where an object is in motion but no physical work is being accomplished.…
A: Consider the situation where a person carrying a suitcase on his head and walking. Now for an…
Q: 1. Hans Full exerts 2.42 x 10³ J of work in pulling on a rope to drag his backpack to school across…
A: Given: Work done, W=2.42×103 J Force, F=22.9 N Displacement, d=129 m To determine angle.
Q: 5. If you tried to lift the object but couldn't, was any work done? Explain your answer.
A: Lets assume the force on the object to be F. And Displacement to be d. But as we couldnot lift the…
Q: Two forces oppose one another by acting in opposite directions on a 10 kg object, one being a…
A: We are given 2 forces. They are acting in opposite direction. One has constant magnitude, other has…
Q: 8. You drag a sled 72 m through level snow while pulling upward at 65° above the horrizontal with a…
A: Givenx=78 mθ=65°F=108.5 Nformula of work done , W=∫F→·dx→ if force is constant , W=F→·x→
Q: Two carts have the same mass. Both carts start at rest and are pushed until one cart is going two…
A: The work energy theorem states that the work done by the net force on a body is equal to change in…
Q: Two people of the same mass climb the same set of stairs. Person A climbs the stairs in 25 s. Person…
A: Let mass of each person = m Weight of each person = mg Time taken by A to climb the set of stairs =…
Q: 12. Consider the following situation: A car is moving with a high speed at the bottom of a hill…
A: Assuming that at bottom of hill potential energy is zero. Initially when car age at bottom of hill…
Q: shes it 10 meters and water fountain, what
A: Work is the product of Force and the displacement of the body in the direction of the force. When…
Q: From the second law of motion and the equation for velocity EF ΣΕ = ma v² = + 2a(x2-11) Derive the…
A: Given:F→net = ma→ ....1v2 = vo2 + 2ax2−x1 ....2Asked:Use equation 1 and 2 to derive Work−Energy…
Q: a person holds a 50 Newton object stationary for 10 seconds, 2 meters above the floor, what is the…
A: The work done is given as product of the force and displacement. W = F x d
Q: . Can a normal force on an object ever do work on the object? Explain.
A: The work done by an object is given as : Work = Force × displacementW = Fdcosθ
Q: Calculate the value of force applied if work done is 190 J and displacement is 12 m.
A: Work done by the force, W=190 J Displacement of the object, d=12 m Work done is the product of force…
Q: 4. A bag originally 60 kg of flour is lifted through a vertical distance of 9 m. While it is being…
A:
Q: 1. Why are we more tired after running upstairs in a few seconds than after walking upstairs in a…
A: Power is the rate at the energy being transferred or energy being converted from one form to…
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