force is equal to the weight w=mg

Q: Suppose that 5 Joules of work is needed to stretch a spring from its natural length of 11 cm to a…

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Q: Suppose that 6 J of work is needed to stretch a spring from its natural length of 28 cm to a length…

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Q: A 60.0-kg skateboarder comes over the top of a hill at 5.00 m/s and reaches 10.0 m/s at the bottom.…

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Q: A rocket uses 4 kJ of chemical potential energy stored in the fuel while shooting the 0.55 kg rocket…

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Q: An object undergoes a displacement Ar =5i+2j. During the displacement, a constant force F = 3i -1j…

A: The work done by the force is given by  W= F→ . r→ where, F is the force and r is the displacement…

Q: A 15.1-kg box is being pushed from the bottom to the top of a frictionless ramp. When the box is…

A: Write the given values with the suitable variables. m=15.1 kgW=58 Ju=0 m/sv=1.50 m/s Here, m, W, u,…

Q: A force is given by the vector F = ( 13 i + 8 j) N and moves from the point (3i+ 8j) m to the point…

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Q: A box m = 58 kg is being pulled by a constant force F = 173 N at an angle of θ = 23 degrees. The…

A: Draw the free-body diagram of the box.

Q: The figure below depicts a roller coaster track. The roller coaster %3D car has a mass of 155 kg,…

A: Given data: m=155 kgh1=26.3 mh2=15.3 mVA=7.89 m/s Need to determine the total mechanical energy at…

Q: A dockworker pushes a box along a horizontal floor and moves a distance of 4.6 m with a force F…

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Q: Two teams are playing a tug-of-war. Team Malakas pulls on Team Matikas by applying a force of 2.1…

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Q: An applied force of ? = −6 ? ?− 2 ? ? caused the object to moves a displacement of? = 3 ? ?+ 1 ? ?.…

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Q: chain 67 meters long whose mass is 28 kilograms is hanging over the edge of a tall building and does…

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Q: The dot product is an operation between two vectors and is a fundamental part of the definition of…

A: The vectors are given as,

Q: Estimate the work (in J) you do to mow a lawn 20 m by 20 m with a 60-cm-wide mower. Assume you push…

A: in this question  we use simple work equation.

Q: while rearranging a dorm room, a student does 343 J of work in moving a desk 3.3 m. what was the…

A: Work done = 343 J displacement = 3.3 m Fhor = ?

Q: A man driving a car sees a deer crossing the road and brakes the car with a force of 100 N. The car…

A: Work Done ( W ) = Force (F) * Distance moved (D)

Q: A physicist has been studying the effects of an unknown force. The work required to move an object…

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Q: A rock with a mass of 2.40 kg is moving with velocity (6.40î − 2.40ĵ) m/s. What is the…

A: 1) Determine the kinetic energy of the rock.

Q: If a force of 36 N stretches a spring 0.3 m beyond its natural length, how much work does it take to…

A: Force (F)=36 N DISPLACEMENT(X)=0.3m first, we will find the spring constant(k) using F=-kx and then…

Q: An object has a mass of 5.153 kg. Initially its velocity is 15.32 m/s. Three forces do work on the…

A: We have given: mass of object, m = 5.153 kg Initial velocity of object, u = 15.32 m/s Final velocity…

Q: P1.29. Determine the work done in moving an object along a vector a 5i - 3j + 2k if the applied…

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Q: A mover's dolly is used to pull up a 15kg refrigerator ramp into a house. The ramp is 2.10 m long…

A: length of ramp (d) = 2.10 m height (h) = 0.85 m mass of refrigerator = 15 kg force exerted up the…

Q: find the net work done by the force as the object moves from x = 0 to x = 3 m.

A: Given: Force on an object is Fx=7x-17 N; here x is in meters. Graph Fx vs x is given. Note: 1 J=1 Nm…

Q: A 800 lb horse pulls a 200 lb cart with a force of 50 lbf. If the horse pulls the cart a distance of…

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Q: A rock with a mass of 3.80 kg is moving with velocity (5.80î – 2.00j) m/s. (HINT: v? = v- v.) (a)…

A: Change in Kinetic energy is equal to net work done. Also to calculate kinetic energy, we need only…

Q: A child of mass m = 29 kg slides down a slide of height h = 2.4 m without friction. Let…

A: A) At the top of the slide, the velocity of the child is zero. Write the expression for the total…

Q: 008 (part 1 of 2) 10.0 points The force required to stretch a Hooke's-law spring varies from 0N to…

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Q: Calculate the work done in lifting a 500-N barbell 2.2 m above the floor. (What is the gain of…

A: Given: Force, F = 500 N Height, d = 2.2 m

Q: A spring has natural length 24 cm. Compare the work (in J) W, done in stretching the spring from 24…

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Q: A object of mass 3.00 kg is subject to a force Fx that varies with position as in the figure below.…

A: in this question  we use area of graph for work done because  work = F × d  it is what area of that…

Q: A physicist has been studying the effects of an unknown force. The work required to move an object…

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Q: How much potential energy does a person of mass 57 kg have if they are standing at the top of a…

A: Potential energy is given by  U = mgh  m = 57kg,   h =62.4 m ,  g = 9.81 m/s2  U = 57*9.81*62.4 =…

Q: Suppose it takes 5 ft-lb of work to compress a spring from its natural length of 4 ft to a length of…

A: As per Hooke's law when an ideal spring is compressed then force proportional to the decrease in…

Q: f 27 J of work is needed to stretch a spring from 18 cm to 24 cm and another 45 J is needed to…

A: Given data as per question energy used  is  27J

Q: 1. Calculate the work done from x = 0 to x = 7 m by the one-dimensional force depicted in the…

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Q: Fill in the blank: Calculate the work done by these forces. A 10.0 N force is applied to push a…

A: Given data *The given applied force on the block is Fapp = 10 N *The given displacement is s = 15 m

Q: A force F parallel to the x-axis is given by the graph. (16 Determine the work, W, done by the force…

A: Given:

Q: If 6 J of work are needed to stretch a spring from 6 cm to 8 cm and 10 J are needed to stretch it…

A: Given: First work  W1 = 6 J. Second work  W2 = 10 J.