Page 14 - SP015 Past Years PSPM Chapter 6 -14 Ver 2020

PHYSICS PSPM SEM 1 1999 - 2017

PSPM 2004/2005 SF017/2 No. 11(c)

5.
C

60
cable

A rod B
hinge
70 cm 50 cm

1000 N

FIGURE 8.3

FIGURE 8.3 shows a 1000 N load hung from a 1.2 m uniform rod of weight 500 N.
The horizontal rod is pivoted to the wall by hinge A and supported by cable BC.

(a) Calculate the tension in cable BC. [2 m]

(b) Determine the magnitude and direction of the force on A. [4 m]

PSPM 2005/2006 SF017/2 No. 3

6.
R

P 12 Q
S
2 1
3 L 3 L

600 N

FIGURE 8.4

A 250 N uniform rod is hinged horizontally to a wall at P by a string QR. A 600 N load
is suspended at S as shown in FIGURE 8.4. If the system is in equilibrium, calculate
the tension in string QR. [4 m]

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