Question

86 A wooden trapdoor is hinged along one side and, Which force will rebalance the b when closed, is supported on the other side by a ledge. \[ H=r \times d \] C \( 45 \mathrm{~N} \) acting downward: ??? D \( 90 \mathrm{~N} \) acting downwar of the midpoint 10 A student finds the centr lamina PQR. When the trapdoor is closed, the ledge exerts an He drills a small hole upward force of \( 15 \mathrm{~N} \) on the trapdoor. The lamina trom a pin throus lamina swings treely. gravitational field strength is \( 10 \mathrm{~N} / \mathrm{kg} \). trom the pin at \( \mathbf{Q} \). What is the mass of the trapdoor? position of the plumb- A \( 1.5 \mathrm{~kg} \) (B) \( 3.0 \mathrm{~kg} \) C \( 30 \mathrm{~kg} \) D \( 150 \mathrm{~kg} \) J10/1/

          86 A wooden trapdoor is hinged along one side and,
Which force will rebalance the b when closed, is supported on the other side by a ledge.
\[
H=r \times d
\]
C \( 45 \mathrm{~N} \) acting downward:
???
D \( 90 \mathrm{~N} \) acting downwar of the midpoint
10 A student finds the centr lamina PQR.
When the trapdoor is closed, the ledge exerts an
He drills a small hole upward force of \( 15 \mathrm{~N} \) on the trapdoor. The lamina trom a pin throus lamina swings treely. gravitational field strength is \( 10 \mathrm{~N} / \mathrm{kg} \). trom the pin at \( \mathbf{Q} \). What is the mass of the trapdoor? position of the plumb-
A \( 1.5 \mathrm{~kg} \)
(B) \( 3.0 \mathrm{~kg} \)
C \( 30 \mathrm{~kg} \)
D \( 150 \mathrm{~kg} \)
J10/1/

86 A wooden trapdoor is hinged along one side and,
Which force will rebalance the b when closed, is supported on the other side by a ledge.

H=r × d

C 45 N acting downward:
???
D 90 N acting downwar of the midpoint
10 A student finds the centr lamina PQR.
When the trapdoor is closed, the ledge exerts an
He drills a small hole upward force of 15 N on the trapdoor. The lamina trom a pin throus lamina swings treely. gravitational field strength is 10 N / kg. trom the pin at 𝐐. What is the mass of the trapdoor? position of the plumb-
A 1.5 kg
(B) 3.0 kg
C 30 kg
D 150 kg
J10/1/

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