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Q1. A spring has a spring constant k. When the spring is stretched through 1 cm, the potential energy will be U. What will be the potential energy if it is stretched by 4 cm?

(a) 4U
(b) 3U
(c) 16U
(d) 23U

Q2. What would be the maximum compression of the spring if a mass of 0.5 kg moving on a horizontal smooth surface with a speed of 1.5 m/s collides with a nearly weightless spring of force constant k= 5 N/m.

(a) 55m
(b) 42m
(c) 1.5 m
(d) 66m

Q3. The potential energy is 4 J for spring when it is stretched by 2 mm. If it is stretched by 10 mm, its potential energy is equal to

(a) 2J
(b) 46J
(c) 543J
(d) 100J

Q4. 100 J of energy is stored by a spring when it is stretched by 2 cm. If it is stretched further by 2 cm, the stored energy will be increased by

(a) 100J
(b) 200J
(c) 300J
(d) 400J

Q5. A spring having an extension of 5 cm has a force constant 800 N/m. The work done in extending it from 5 cm to 15 cm is

(a) 7J
(b) 8 J
(c) 5J
(d) 4J

Q6. A body moving with a velocity 10 m/s and having a mass 0.1 kg hits a spring (fixed at the other end) of force constant 1000 N/m and comes to rest after compressing the spring. What will be the value of compression of the spring?

(a) 0.7m
(b) 0.2 m
(c) 0.8m
(d) 0.4m

Q7. What will be the work done in stretching the spring through 40 mm if 10 N force is required to stretch the spring through 1 mm

(a) 65J
(b) 57J
(c) 23J
(d) 8J

Q8. Same force is used to stretch two springs of spring constants 1500 N/m and 3000 N/m respectively. What will be the ratio of potential energy?

(a) 1:9
(b) 2:1
(c) 7:9
(d) 4:4

Q9. A spring with an initial stretch of 0.20 m has a force constant 10 N/m. When the stretch is changed to 0.25 m, the increase in potential energy is

(a) 0.2 joule
(b) 0.3 joule
(c) 0.1 joule
(d) 0.5 joule

Q10. There are two springs with the force constant as k1 and k2 (k1?k2). They are stretched by the same force then

(a) More work is done in the first spring
(b) In both springs equal work is done
(c) In the second spring, more work is done
(d) No work is done in both the springs


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Modified 13 Year Ago

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13 Year Ago

A Mass Of M Kg Is Suspended By A Weightless String. The Horizontal Force That Is Required To Displace It Until The String Makes An Angle Of 45° With The Initial Vertical Direction Is

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2 Answer
677 views

A Ball Is Dropped From Height 20 M. If Coefficient Of Restitution Is 0.9 What Will Be The Height Attained After First Bounce?

Modified 13 Year Ago

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13 Year Ago

A Ball Is Dropped From Height 20 M. If Coefficient Of Restitution Is 0.9 What Will Be The Height Attained After First Bounce?

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2 Answer
501 views

A 50kg Man With 20kg Load On His Head Climbs Up 20 Steps Of 0.25m Height Each

Modified 200 Year Ago

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200 Year Ago

A 50kg Man With 20kg Load On His Head Climbs Up 20 Steps Of 0.25m Height Each

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A Particle Of Mass 100g Thrown Vertically Upwards With A Speed Of 5m/s.

Modified 230 Year Ago

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230 Year Ago

A Particle Of Mass 100g Thrown Vertically Upwards With A Speed Of 5m/s.

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2 Answer
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If Force And Displacement Of Particle In Direction Force Are Doubled.Work Would Be

Modified 230 Year Ago

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If Force And Displacement Of Particle In Direction Force Are Doubled.Work Would Be

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2 Answer
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A Body Of Mass 5 Kg Is Placed At The Origin, And Can Move Only On The X-axis. The Work Done By The Force Is

Modified 230 Year Ago

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230 Year Ago

A Body Of Mass 5 Kg Is Placed At The Origin, And Can Move Only On The X-axis. The Work Done By The Force Is

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2 Answer
424 views

A Body Moves A Distance Of 10m Along A Straight Line Under The Action Of A Force Of 5 N.

Modified 230 Year Ago

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230 Year Ago

A Body Moves A Distance Of 10m Along A Straight Line Under The Action Of A Force Of 5 N.

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