MOMENTS COUPLES AND STABILITY PHYSICS (WHERE NECESSARY TAKE G

6 CHAPITRE N° 2 LES MOMENTS LES MOMENTS
BIKEMOMENTS P RESS RELEASE 33RD MARATONA DLES DOLOMITES –
CALCULATION OF JOINT MOMENTS AND MUSCLE FORCES TRY BALANCING

CLIMB® SUPPORT PROGRAM C HILDRENS LIVES INCLUDE MOMENTS OF
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Moments, couples and stability

Moments, couples and stability Physics


(Where necessary take g = 9.8 ms-2)


1. What is meant by the centre of gravity of a body?


2. How does the position of the centre of gravity of an object affect its stability?


3. Give an example of:

(a) unstable equilibrum

(MOMENTS COUPLES AND STABILITY PHYSICS (WHERE NECESSARY TAKE G b) stable equilibrium

(c) neutral equilibrium


4. What force (F) is needed to keep the uniform heavy bar horizontal?

(mass of bar = 4 kg)

MOMENTS COUPLES AND STABILITY PHYSICS (WHERE NECESSARY TAKE G


5. What is the torque shown in the diagram?



MOMENTS COUPLES AND STABILITY PHYSICS (WHERE NECESSARY TAKE G


6. Draw a diagram to show two additional forces (one through the pivot) that are required to keep the bar in equilibrium.

MOMENTS COUPLES AND STABILITY PHYSICS (WHERE NECESSARY TAKE G


7. (a) what is the normal reaction between the uniform 3m long ladder and the wall?

(b) what is the size and direction of the reaction at the ground

(c) a painter of mass 70 kg climbs the ladder. Calculate the new values for parts (a) and (b) when they are 1.0 m up the ladder (measured along the ladder itself).


8. What makes a supermarket trolley so stable?


9. I used a 7.5 kg wheelbarrow to carry a 35 kg rock. If the rock is placed with its centre of gravity 0.2 m in front of the wheel and the centre of gravity of the wheelbarrow is 0.1 m in front of the wheel what force must be applied to the handle 0.6m from the wheel to keep the wheelbarrow horizontal.


10. Draw a graph showing how the force in question 9 varies as the handles are raised to tip the rock out.


FACILITATING THE EMOTIONAL MAPPING EXERCISE THE KEY MOMENTS ALONG
KNOWING ME – KNOWING YOU AHA! EMMAUS MOMENTS IN
LEKTIONSMOMENT HT2 DELMOMENTSLISTAN INTRO OCH GENOMGÅNG AV KURSPLANEN LÖPTESTER


Tags: (where necessary, necessary, stability, couples, (where, moments, physics