# Science

2.1 Two blocks of mass M kg and 2.5kg respectively are connected by a light, inextensible string. The string runs over a light, frictionless pulley ,The blocks are stationary

2.1.1 calculate the tension in a string
The coefficient of static friction between the unknown mass M and the surface of the table is 0.2.
2.1.2 Calculate the minimum value of M that'll prevent the blocks from moving

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1. tension = 2.5 g = 2.5 * 9.81 Newtons

0.2 M g = 2.5 g
M = 2.5 / 0.2 = 12.5 kg

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posted by Damon

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