Mathematics, 09.10.2021 01:00, puchie1225

a boy pulls a nail from the wall with a strong held to a naill . the string is inclined at angle 60° to the wall. if the tension in the string is 4newton, what is the effective force used in pulling the wall

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a boy pulls a nail from the wall with a strong held to a naill . the string is inclined at angle 60°...