An archer pulls her bowstringback 0.400 m byexerting a force thatincreases uniformly fromzero to 230 N. (a) Whatis the equivalent springconstant of the bow? (b) How much work does the archer doin pulling the bow?

Q: A boy of mass m climbs up the stairs of vertical height h. What is the work done by the boy against…

A: Given,           A boy of mass m climbs up the stairs of vertical height h.

Q: Khufra works at a spring factory and he was assigned to test a certain spring, whose constant is 50…

A: Work done is defined as  W =F→.S→If force and displacement is in same direction thenW =FSIf force…

Q: The compound bow in the previous problem requires 152 J of work to draw the string back tox = 0.540…

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Q: A 129 kg block us pulled at a constant speed of 4.3 m/s across a horizontal floor by a force of 138…

A:

Q: incleved plane of angle 2o.ohasspring of force constant 305 Nn testeed securly t the botto so that…

A: Problem is from newton's laws of motion. It can be solved by using law of conservation of energy.…

Q: The breaks of a truck cause it to slow down by applying a retarding force of 6450N to the truck over…

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Q: A locomotive of mass m starts moving so that its velocity varies according to the law v = aV s,…

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Q: a force F=(3x4-5) N acts on a body movin in 1D in x direction from the point x=0 to x=4 . find the…

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Q: A 50.0 kg student climbs a 5.00 m long rope and stops at the top. (a) What must her average speed be…

A: Given  Mass of student m=50kg length of rope h=5m power P=300W

Q: A spring with a force constant K obeys Hook's Law. It requires 4 J of work to stretch it through 10…

A: A spring with a force constant K obeys Hook's Law. Hookes law gives the force that must be exerted…

Q: find (a) the work done by the applied force, (b) the the energy lost due to friction, (c) the change…

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Q: A system with only conservative forces acting on it has a mechanical energy of 50 Jand an initial…

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Q: A 0.5 kg pendulum is released from rest. If the cord is 12 m long and the bob (the ball part of the…

A:

Q: A cord is used to lower vertically a block of mass M a distance dat a constant downward acceleration…

A: Given: The mass of the block is M. The distance is d. The downward acceleration is a=g4.   The…

Q: A block of mass 2.5 kg, which has an initial velocity of 4.4 m/s at time t = 0, slides on a…

A:

Q: An arrow of mass 100g is drawn back so that 5J of elastic potential energy is stored in the…

A: Mass of the arrow, m = 100 g = 0.1 kg Potential energy stored in the string, U = 5 J   The final…

Q: Find the work done by a force of constant magnitude F=0,1KN.If the displacement of the body is…

A: Given data: Force, F=0.1 kN = 100 N Displacement, r=100 mm =100×10-3 m = 0.1 m Angle between…

Q: Youare riding a sled trougha frozen lake, and you accelerate the 80.0-kg combination of you and the…

A: m=80 kgvi=1 m/svf=3.5 m/st=1.5 s

Q: A box with a mass of 3.0 kg is accelerated from rest by a constant force across a foor at a rate of…

A: Given that,  Mass of the box, m = 3.0 kg Initial velocity, u = 0 m/s Final velocity, v = 1.7 m/s…

Q: a force of 5N is applied to an object at an angle of 51 degrees to the x-axis. The object slides in…

A: Given Force applied to the object: 5 N The angle at which force is applied : θ=51∘ Distance which…

Q: A 628-kg elevator starts from rest and moves upward for 4.10 s with constant accelerațion until it…

A:

Q: A 10N horizontal force is exerted on a 100kg object that slides on a frictionless, horizontal…

A: First method: According to the Newton’s second law, the acceleration of the object is, F=maa=Fm=10…

Q: It takes a .4 kW motor 30 seconds to drags a 500kg crate over an 30m incline with coefficient of…

A:

Q: (4) Need to know the weight of the block to answer. (5) Need to know the coetficient of friction a,…

A: The equation for the work done is,

Q: A 8.6kg suitcase from rest was pulled by an FA at an angle 38.8degrees. The displacement after 30…

A: Given data as per question mass =  8.6 kg displacement = 16.5m angle  =  38.8

Q: Suppose the car approches a hill and has the intial speed 106 km/h at the bottom of the hill. The…

A: Given Data : The initial speed of the car at the bottom of the hill is given as u=106 ms

Q: It takes a force of 29.79 Newtons to stretch a 46-cm spring to 127-cm and hold it there. How much…

A:

Q: In terms of X, how much is compressed to store twice as much potential energy and half as much…

A: Elastic potential energy,

Q: A hummingbird hovers by exerting a downward forceon the air equal, on average, to its weight. By…

A: Given,

Q: A 5.6kg suitcase from rest was pulled by an FA at an angle 44.1degrees. The displacement after 30…

A: mass of suitcase = 5.6 kg angle at which the force is applied = 44.1odisplacement after 30 seconds =…

Q: You’re fishing from a tall pier and have just caught a 1.5 kg fish. As it breaks the surface,…

A: mass of fish (m) = 1.5 kg Tension (T) = 16 N distance moved in vertical direction (h) = 2 m

Q: Compute the minimum power necessary to operate aski lift that carries skiers along a 45.0slope. The…

A:

Q: g system as shown:

A: To explain the work done and the degrees of freedom as,

Q: How high from the floor is a 50.0 kg object lifted, using 4900.0 J of work?  If it falls back to the…

A: Given in question -  Mass of object(m) = 50.0 Kg Work(w) = 4900.0 J To find - (a). How high(h) from…

Q: A sleigh sliding on a stiff icy mountainside obeys the law of conservation of Mechanical energy.…

A: The sleigh is initially at rest at the top of the 1 km high mountain peak. Since the sleigh is at…

Q: Find the work done by th brakes of a bicycle to reduce its speed from 10ms^1 to 4ms^1, if the…

A:

Q: Suppose the energy required to speed up a car initially at rest until the Speed V, ignoring the…

A:

Q: Compute the minimum power necessary to operate a ski lift that carries skiers along a 45.0 slope.…

A: Given value--- slope = 45 degree.  weight = 700 N. speed = 5 m/s. No. of skiers = 100 . We have to…

Q: A 20-pound force stretches a 9-inch spring in a machine of exercises. Find the work done in…

A: The force F = 20 pounds produces a stretch X = 9 in. in a spring

Q: 5. A mass m moves in one dimension along the positive â axis (x > 0) under the influence of a force…

A: MECHANICS

Q: It takes a force of 23.03 Newtons to stretch a 19-cm spring to 127-cm and hold it there. How much…

A: Given:-  The force on the spring is F = 23.03 N  The length of the spring is L = 19 cm  The spring…