3. The simple pendulum A of mass m, and length / Is suspended from the trolley B of mass mɛ. If the system is released from rest at 0 = 0, determine the velocity V3 of the trolley when 0 = 90°. Friction is negligible.

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: 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: Q2: The boat in Fig.2 is traveling at 40km/h. The rope to tow the parasail is 150m long. At the…

A: Given: Initial velocity of boat is 40 km/h Length of the rope to parasail is 150 meters At t=0…

Q: A small asteroid that has a mass of 100 kg is moving at 200 m/s when it is 1660 km above the Moon.…

A:

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: A weight lifter raises a 963 N weight a vertical distance of 1.87 m. Compute the work done by the…

A:

Q: (Prob. 1,8 A heavy rope, 10 m long, weighs 0.5 N/m and hangs over the edge of a building 100 m high.…

A:

Q: A coal power plant has a rated output of 150 MW and a first law efficiency of 41%. Coal has an…

A: We are aware that a coal power plant has a first law efficiency of 41% and a rated output of 150 MW.…

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: A crate of mass 95.6 kg is pushed along a floor with a force of 30 N for a distance of 18.5 m.…

A:

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: the electrical energy used by a household whose monthly electrical bill is $42, computed at the rate…

A: Givenmonthly electrical bill is $42At rate of $0.07 per kWh.

Q: a) Compute the electrical energy used by a household whose monthly electrical bill is $30, computed…

A:

Q: [Numbers change] If this amount of energy were used to lift a person with mass 92 kg off the ground,…

A: Solution: let us calculate the amount of energy from the information of the power and of the laptop…

Q: What work is done on a level track in bringing the velocity of a train weighing 200 tons from zero…

A: Given data: The weight of the train is W=200 tons. The initial speed is u=0 mi/hr. The final speed…

Q: satellite is held in orbit by a 1000-N gravitational force. Each time the satellite completes an…

A: Gravitational force (F) = 1000 N Circumference (L) = 80000 km

Q: A variable force of 7x-2 pounds moves an object along a straight line when it is x feet from the…

A: Solution

Q: A transport truck driving at a constant speed of 87 km/hr on a flat stretch of highway must produce…

A:

Q: A lunar module weighs 12 metric tons on the surface of the Earth. How much work is done in…

A: Given the mass of the module on earth m=12000 Kg This mass remains same at moon too. The work done…

Q: A 66 kg man pushes off from the 108kg block on ice and slides away at a speed of 4 m/s What is the…

A: Given: Mass of a man (m) = 66 kg. Mass of a block (M) = 108 kg. Speed of man (v) = 4 m/s.

Q: (a) Compute the electrical energy used by a household whose monthly electrical bill is $34, computed…

A:

Q: A force of 5 pounds acts in the direction of 41​° to the horizontal. The force moves an object along…

A: Given data *The given force is F = 5 pounds *The given angle is θ=410 *The initial point is x,y=2,7…

Q: A book is pushed with a force of 71N which produced a work done of 24J. How far did the book travel?

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: Use conservative and non-conservative force to create a simple story.

A: Work done by conservative forces depends primarily on the initial and final points. Forces that are…

Q: As you see in Fig.5, a block of mass m = 0.59 kg is supported by a light rope that wraps around a…

A:

Q: Find the work W done by a force of 5 pounds acting in the direction 30° to the horizontal in moving…

A:

Q: Compute the electrical energy used by a household whose monthly electrical bill is $43, computed at…

A: Given  Monthly bill = $ 43 Rate = $ 0.05 Mass = 1985 kg

Q: Suppose that 4 J of work is needed to stretch a spring from its natural length of 32 cm to a length…

A: The work needed to stretch spring a distance x from its equilibrium position x0 to xn is…

Q: How much work must a 1000kg truck must produce to drive a 178km highway if an average force of 464N…

A: