There are three handles on this door. The hinge needs a moment of 20 Nm to open the door. 3 30 cm 27 cm 28 cm a) Ií handle 1 is pushed with a force of 10 N, nothing happens. Why won't the door open? Hinge Handle 1 Handle 3 b) What (to 1d.p) is the smallest pushing force needed to open the door with handle 2? Handle 2 c) What's the minimum force (to 1 d.p.) needed to open the door with handle 3? d) Why are door handles usually on the opposite side to the hinges?

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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There are three handles on this door. The hinge
needs a moment of 20 Nm to open the door.
3
30 cm
27 cm
28 cm.
a) Ií handle 1 is pushed with a force of 10 N,
nothing happens. Why won't the door open?
Hinge
Handle 1
Handle 3
b) What (to 1d.p) is the smallest pushing force
needed to open the door with handle 2?
Handle 2
c) What's the minimum force (to 1 d.p.) needed to open the door with handle 3?
d) Why are door handles usually on the opposite side to the hinges?
Transcribed Image Text:There are three handles on this door. The hinge needs a moment of 20 Nm to open the door. 3 30 cm 27 cm 28 cm. a) Ií handle 1 is pushed with a force of 10 N, nothing happens. Why won't the door open? Hinge Handle 1 Handle 3 b) What (to 1d.p) is the smallest pushing force needed to open the door with handle 2? Handle 2 c) What's the minimum force (to 1 d.p.) needed to open the door with handle 3? d) Why are door handles usually on the opposite side to the hinges?
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