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In our bodies, torque produced due to th...

In our bodies, torque produced due to the contraction of the muscles cause some bones move at the joints. For example in lifting a load with the hand, torque is applied by the bicep muscles on the elbow. If the axis of rotation through the elbow point and the muscle attached is 4 cm from the joint, find the magnitudes of the muscle torques in the two cases, if the muscle exerts a force of 600 N?

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  1. In our bodies, torque produced due to the contraction of the muscles c...

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  2. What are the properties of cross product?

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  3. What is the condition for two vectors to be parallel to each other?

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  4. Find the condition for two vectors to be perpendicular to each other

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  5. Show that the angle between vecA = hat i -5 hat j and vecB = 2 hat i -...

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  6. If vec A xx vec B = vec C xx vec B show that vec C need not be equal t...

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  7. If vec A xx vec B = vec C xx vec B. When will vec C be equal to vec A...

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  8. Explain, why it is difficult to open a door by pushing or pulling it n...

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  9. While turning the page of a book, we usually apply force perpendicular...

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  10. Torque and work are both defined as force times distance. How do they ...

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  11. A particle moves in a circular path with decreasing speed. what happen...

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  12. A ladder is more apt to slip when you are high up on its than when you...

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  13. A planet revolves around the sun under the effect of gravitational for...

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  14. A projectile acquires angular momentum about its point of projection d...

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  15. What do you mean by mechanical equilibrium of a rigid body?

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  16. State the condition for the rigid body to be in mechanical equilibrium...

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  17. Why does the speed of a planet vary in its orbit around the sun ?

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  18. A heavenly body revolves around a massive star in a highly elliptical ...

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  19. Explain vector product of two vectors. Mention its any two properties.

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  20. Given that vec A = Ax hat i + Ay hat j+Az hatk and vec B = Bx hat i + ...

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  21. Derive an expression for the area of a triangle in terms of the cross-...

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