How much work does it take to raise a #7 kg # weight #9 m #?
Benjamin AsieduAssuming it is raised vertically on or near earth, the work done is equal to the potential energy gained.
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Elena AlbarranThe work done to raise a 7 kg weight 9 m is 630 joules.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
- How much work does it take to raise a #7 kg # weight #28 m #?
- The force applied on a moving object with a mass of #5 kg # on a linear path is given by #F(x)=x^2+1 #. How much work would it take to move the object over #x in [1,4 ] #?
- A spring with a constant of #2 (kg)/(s^2)# is lying on the ground with one end attached to a wall. An object with a mass of #4 kg # and speed of # 3 m/s# collides with and compresses the spring until it stops moving. How much will the spring compress?
- The force applied against an object moving horizontally on a linear path is described by #F(x)= cospix+x #. By how much does the object's kinetic energy change as the object moves from # x in [ 0, 2 ]#?
- John uses a pulley to lift the sail on his sailboat. The sail weighs 150 N, and he must lift it 4.0 m. The pulley is 50% efficient. How much work must be done to lift the sail? How much work must John do on the rope to lift the sail?
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