Two masses as shown in the figure are suspended from a massless pulley. The acceleration of the system when masses are left free is (a) (c) 2g 3 ∞a g (b) (d) 8 م اومد 3 8 7 5g 10g

Q: Calculate the amount of work done if a 300 N object is lifted to a height of 2.5 m.

A: Given that Weight of object F = 300 N Height h = 2.5 m

Q: Rings 2 n work done by the мал 2

A: Write the expression for the work done. W=F→⋅d→W=Fdcosθ Here, F is the force, d is the distance, and…

Q: What net force, in Newtons, is needed to do 1,847 J of work over a distance of 144 meters?   Round…

A: Given thatwork, W=1847 Jdistance, d=144 mas work, W=Fdwhere F is force

Q: Take a boat with a mass of 1.5 kg and lift it to a height of 2m. Compute the amount of work done.

A: Given:Mass,m=1.5 kgHeight,h=2mGravitational acceleration,g=9.81 m/s2Now,Work done,wW=Fdcosθ…

Q: Write a short note on work?

A: Work

Q: Why it is dangerous to stand near the railway track when a train is moving with high speed.

A: According to Bernaulli theorem P + (1/2)ρv2 + ρgh = constant  P is pressure v is velocity  ρ is…

Q: which is more tiring, running or walking in the stairs? explain

A: Given : Which is more tiring running or walking in the stairs ?

Q: A 5-kg object is pushed across a level surface with a force of 12 N for a distance of 6 m. How much…

A:

Q: Nellie Newton applies a force of 50 N to the end of a lever, which is moved a certain distance. If…

A: It is given that

Q: How much power (in kW) is required to raise an elevator with a mass of 1,855 kg at a rate of 51…

A:

Q: How much work is done lifting a 20 pound object from the ground to the top of a 50 foot building if…

A: Weight = 20 pounds Weight per foot = 2.5 lb/ft Height = 50 ft Workdone, W = ?

Q: A box with a max of 20 KG at 5m is lifted to 20 m how much work was done? (Used=changed in PE

A: The distance moved by the box is h=20-5m=15m

Q: What is the work done lifting a 20kg child from the floor to a height of 2m? (Note that a mass of…

A: Given  Mass(m) = 20 kg  Height (h) = 2 m  Acceleration due to gravity near earth surface (g) = 9.8…

Q: Write down The relationship between the total work done on an object and how the object’s speed…

A:

Q: A 2-kg block of wood is pushed by horizontal force of 10 N to a distance of 3 m. The work done…

A: Given:  Mass of block m= 2 Kg Force applied F= 10N Distance d= 3m

Q: Why is it that the work done in holding a bag w above the floor is 0?

A: GivenF=1 N1 m above the floor

Q: What net force, in Newtons, is needed to do 1,164 J of work over a distance of 125 meters?

A:

Q: The work done in pushing a TV set a distance of 2 m with an average force of 5 N is A) 25J . B) 10…

A: If F force has been applied  on an object that has r displacement. then work don on the object  W =…

Q: The rate of doing work is known as

A: In physics, the rate of doing work is known as Power. It is equivalent to an amount of energy…

Q: dP

A:

Q: Which of the following is not a unit of power? O J/s O N'm O horsepower Watts

A:

Q: A pair of bullocks exerts a force of 160 N on a plough . The field being ploughed is 18 m long . How…

A:

Q: How much work is done lifting a 35 pound object from the ground to the top of a 30 foot building if…

A:

Q: Calculate the work done when a force of 15 N moves a body by 5 m in its direction.

A: Introduction :  In this question we are provided with value of  force and displacement . with these…

Q: Calculate the work done on a laptop with a mass of 2 kg when it is pushed 0.5 m with a force of 5 N.

A: Given: F = 5 Ns = 0.5 m To find: Work done(W)

Q: If you know that the density of water is 1000 kg/m3, the height of the falling water is 0 150, the…

A:

Q: the choices was  80% 70% 60% 50%

A:

Q: Unit of work?

A: Work: It is the product of the applied force to the displacement of the object along the direction…

Q: anet with a net force of 250 now all work, including the

A:

Q: In raising a 5000-N piano with a pulley system, the workers note that for every 2 m of rope pulled…

A: The equation for the work done is given by,